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Sikaflex Construction+, Sealant for Concrete & Masonry Facades, Exterior, Concrete Grey, 600 mL

Adhesives & Sealants
SIKA

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

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SEALANT FOR CONCRETE AND MASONRY FACADES

Sikaflex Construction+ is a 1-component, moisture-curing, elastic joint sealant.

  • Very good resistance to weathering.
  • Movement capability of ± 35 (ASTM C 719).
  • Bubble-free curing.
  • Good workability.
  • Good adhesion to many substrates.
  • Solvent-free.
  • Very low emissions.
Usage
Sikaflex Construction+ is designed for movement and connection joints in concrete facades.
Advantages
  • Very good resistance to weathering.
  • Movement capability of ± 35 (ASTM C 719).
  • Bubble-free curing.
  • Good workability.
  • Good adhesion to many substrates.
  • Solvent-free.
  • Very low emissions.
 
Packaging

600 ml foil pack, 20 foil packs per box

Colour

Concrete Grey

Technical Information
Shore A Hardness

~28 (after 28 days)

 (ISO 868)

Secant Tensile Modulus

~0.45 N/mm2 at 100 % elongation (+23 °C)

(ISO 8339)

~1.10 N/mm2 at 100 % elongation (−20 °C)

Movement Capability

± 25 %

(ISO 9047)

± 35 %(ASTM C 719)

Elastic Recovery

~90 %

(ISO 7389)

Tear Propagation Resistance

~7.0 N/mm

 (ISO 34)

Service Temperature

−40 °C to +70 °C

Resistance to Weathering

 8

 (ISO / DIS 19862)

Joint Design

The joint width must be a minimum of 6 mm and a maximum of 50 mm. A width to depth ratio of 2:1 must be maintained. Joint widths less than 10 mm are generally for interior connection joints or crack control joints and therefore considered as non-movement joints. Example of typical joint widths for joints between concrete elements for exterior applications if the joint sealant is classified as ±25 % movement capability according to ISO 9047, calculation according to DIN 18540:
 

Joint distance [m]

Min. joint width [mm]

Min. joint depth [mm]

21010
41510
62010
83015
103517

Example of typical joint widths for joints between concrete elements for exterior applications if the joint sealant is classified as ±35 % movement capability according to ASTM C 719, Calculation according to ASTM C 1472-10:

Joint distance [m]

Min. joint width [mm]

Min. joint depth [mm]

21010
41510
61510
82512
103015

All joints must be correctly designed and dimensioned in accordance with the relevant standards and codes of practice before their construction. The basis for calculation of the necessary joint widths are:
▪ The type of structure
▪ Dimensions
▪ Technical values of the adjacent building materials
▪ Joint sealing material
▪ The specific exposure of the building and the joints


For joint design and calculations contact Sika Technical Services for additional information.

 

Application Information
Sag Flow

0 mm (20 mm profile, 50 °C)

(ISO 7390)

Ambient Air Temperature

+5 °C to +40 °C, min. 3 °C above dew point temperature

Substrate Temperature

+5 °C to +40 °C

Backing Material

Use closed cell, polyethylene foam backing rods.

Curing Rate

~3 mm/24 hours (23 °C / 50 % r.h.)

(CQP 049-2)

Skin Time

~65 minutes (23 °C / 50 % r.h.)

(CQP 019-1)

Tooling Time

~55 minutes (23 °C / 50 % r.h.)

(CQP 019-2)